Raynergy Tek announces Novel Organic Semiconductors with spectral response of 1300 nm and detectivity of 1011 is within Reach !
2022/11/4
We have achieved an important milestone in our Novel Organic semiconductor (OSCs) materials development. An OSCs material, PD-1300 which demonstrated good spectral response at wavelength of 1300 nm was developed by our R&D team successfully. The photodiode’s dark current density records an impressive value of 3x10-7 A/cm2 and detectivity tabulated to be 9.3 x 1010 Jones at voltage bias of -2 V, respectively, which to our knowledge is the best results of known reported for OPD-based SWIR device performance.
Generally, it is skeptical for organic semiconductor based photactive material to show spectral response of wavelength over 1000 nm, mainly attributed to the likelihood of recombinaton of the exciton generated by light within the ultra low bandgap material according to the known theoryof organic semiconductor. However, the prominent challenge was overcome by our materials designers and presents a strong candidate of materials for potential use in SWIR application. In addtional, the organic based photodiode device is made by solution, low temperature process and ink formulated using green solvent to be in line with low carbon emmision and ESG policy.
One of the key advantages of SWIR light is it can differentiate the objects which visible light cannot do, and offer better detectivity under objects due to higher transmmision. Therefore, the revolutionary SWIR image sensor is highly sought out and targeted to be widely adopted for under display 3D structuring for mobile phone authentication, eyes tracking for AR/VR headset, Lidar and camera for automotive ADAS or AD system etc. Besides, SWIR light is safer in operation for eye ball detection compared to that of NIR light, which make eye safety sensor a common future-sensor trend. As the latest market forecast from Yole Group, the SWIR image sensor might generate a value of $3.2B by 2027 with 52% CAGR since 2021.
This SWIR materials development project was started early this year, we are glad that the dedicated 10 months’ effort has significant results that could possibly propel us to next level materials innovation. We give the credit to our excellent R&D team led by Dr. Yi-Ming Chang (CTO), Dr. Chuang-Yi Liao (R&D director) and Dr. Kuen-Wei Tsai (R&D manager). We make science happen again! We will continue making it happen!
Figures：
(a) IV curve of PD-1300 device under bias from 2 to -2 V
(b) Detectivity of PD-1300 device shows spectral response ranges from 300nm to 1500nm